Regan Brown
Honda has been using fuel injection technology since the early 1980s, with the CX500 Turbo (a 500cc export model) being the first motorcycle to be sold with fuel injection in 1982. Honda introduced electronic fuel injection (EFI) on dirt bikes in 2009 with the Honda CRF110F, and in 2003, Honda Motor Co., Ltd. announced the development of the world's first electronically controlled fuel injection system for a 4-stroke 50cc scooter. Honda's fuel injection technology has been constantly improved and expanded upon, offering increased reliability, performance, and fuel efficiency.
| Characteristics | Values |
|---|---|
| Year Honda started using fuel injectors | 1982 |
| First Honda motorcycle with fuel injection | CX500 Turbo (500cc export model) |
| Honda Civic engine | 2-stage VTEC |
| Honda Civic mileage | 200,000 to 300,000 miles |
| Honda Civic Hybrid engine | 1.5-liter i-VTEC four-cylinder engine with Integrated Motor Assist (IMA) and a Continuously Variable Transmission (CVT) |
| Honda Civic Hybrid mileage | 200,000+ miles |
| Honda Civic Hybrid fuel economy | 7% better at 30km/h steady speed; 10% better in city driving conditions |
| Honda Civic Hybrid emissions | 50% less CO and HC compared to Japanese government regulations |
| Honda dirt bike with fuel injection | Honda CRF110F |
| Year Honda CRF110F released | 2009 |
| Number of Honda dirt bikes with fuel injection in 2019 | 4 |
| Honda's proprietary digital electronic fuel injection system | Programmed Fuel Injection (PGMFI/PGM-FI) |
| Year Honda introduced PGM-FI | Early 1980s |
| Honda models with PGM-FI | CX500, CX650, City Turbo, Accord, Prelude, VFR800FI, CR-V |
| Honda's first electronically controlled fuel injection system for a 4-stroke 50cc scooter | Announced in 2003 |
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What You'll Learn
Honda's first fuel-injected motorcycle
Honda was one of the last manufacturers to adopt fuel injection technology, despite being a relatively early adopter of multiport fuel injection in the 1980s. The first fuel-injected motorcycle from Honda was the CX500T, released in 1982, which was also its first turbo motorcycle. The CX500T was a 500cc export model, and since its release, Honda has made fuel injection available on a wide range of motorcycles, from large-displacement 1800cc bikes to small-displacement 125cc models.
The CX500T was followed by the CX650T in 1983, which offered greater performance. Honda's engineers lowered the compression ratio of the CX500T to 7.2:1, compared to 10:1 for the naturally aspirated CX engine. This resulted in greater horsepower and bike performance than its naturally aspirated cousins. The CX650T had a compression ratio of 7.8:1.
The Honda engineers found that determining the fuel injection quantity by turbo boost pressure and rpm yielded the best performance at low RPM and low loads. In contrast, determining the fuel injection quantity by RPM and throttle yielded the best results at high RPM and high loads.
In 1998, Honda introduced the VFR800FI, which was the third Honda motorcycle to have fuel injection. The VFR800FI and its variants proved to be a good seller for Honda, with a long production history.
Honda introduced electronic fuel injection (EFI) on its dirt bikes in 2009, with the Honda CRF110F being the first model to feature this technology. This was a significant shift in the industry, as the EFI system automatically adjusted the fuel mixture based on engine requirements, providing improved performance and reliability. By 2019, Honda had expanded its lineup to include four different fuel-injected models, catering to different riding preferences and terrains.
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Honda's first fuel-injected dirt bike
Honda introduced its first fuel-injected dirt bike model in 2009, marking a significant shift in the industry. The Honda CRF110F was the first dirt bike from the brand to feature fuel injection, providing riders with improved performance and reliability. The CRF110F quickly gained popularity among riders due to its user-friendly design and powerful performance. Its lightweight frame and smooth power delivery made it suitable for riders of all skill levels.
The CRF110F's fuel injection replaced the traditional carburetor system, offering more precise fuel delivery. This technology allowed for better throttle response, smoother power delivery, and increased fuel efficiency. The EFI system automatically adjusted the fuel mixture based on the engine's requirements, eliminating the need for riders to adjust carburetor settings for different riding conditions.
Honda's venture into fuel injection technology for dirt bikes began with early experiments in the 1930s. However, it wasn't until the 1980s that electronic fuel injection (EFI) systems emerged, bringing more precise and efficient fuel delivery. Honda was a relatively early adopter of multiport fuel injection during this time, with models like the CX500 Turbo being among the first motorcycles to utilise EFI technology.
By 2019, Honda had expanded its fuel-injected dirt bike lineup to include four different models catering to various riding styles and terrains, offering the versatility, reliability, and performance that Honda is known for. The success of their initial fuel-injected dirt bike model paved the way for future models, with Honda continuously refining its fuel injection technology to enhance the riding experience for dirt bike enthusiasts.
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Honda's PGM-FI system
The PGM-FI unit is composed of several electronic components and circuits that measure vital engine parameters such as air temperature, coolant temperature, engine speed, and throttle position. These measurements allow the unit to adjust fuel distribution based on current driving conditions. For instance, the Civic Hybrid's PGM-FI system monitors throttle position, engine temperature, intake-manifold pressure, atmospheric pressure, exhaust-gas oxygen content, and intake-air temperature.
In 2009, Honda introduced electronic fuel injection (EFI) on their dirt bikes, marking a significant shift in the industry. The Honda CRF110F was the first dirt bike from the brand to feature fuel injection, providing riders with improved performance, reliability, and fuel efficiency. By 2019, Honda had expanded its lineup to include four different fuel-injected models, catering to different riding preferences and terrains.
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Honda's early adoption of multiport fuel injection
Honda was one of the early adopters of multiport fuel injection in the 1980s. The CX500 Turbo, a 500cc export model, was the first Honda motorcycle to be sold with fuel injection in 1982. Honda introduced its first fuel-injected dirt bike in 2009, which was the Honda CRF110F.
The history of fuel injection technology dates back to the 1930s, with the first engine to use a pressurised fuel injection system appearing as early as 1891. Mass-produced diesel engines for passenger cars, such as the Mercedes-Benz OM 138, became available in the late 1930s and early 1940s. The first petrol engine with direct injection was a two-stroke aircraft engine designed in 1916.
In the context of Honda's early adoption of multiport fuel injection, it is worth noting that the CX500 Turbo was a significant milestone. This 500cc export model motorcycle was introduced in 1982 and marked the beginning of Honda's journey with fuel injection technology. Since then, Honda has expanded its use of fuel injection across various models and engine types.
Honda's early experimentation with fuel injection technology in the 1980s laid the foundation for future advancements. The company continued to refine its fuel injection systems, enhancing performance, reliability, and fuel efficiency. This early adoption and ongoing innovation have contributed to Honda's reputation for engineering excellence and their ability to adapt to evolving industry standards.
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Honda's first electronically controlled fuel injection system
Honda Motor Co., Ltd. announced the development of the world's first electronically controlled fuel injection system, the Honda Programmed Fuel Injection (PGM-FI), for use in 4-stroke, 50cc engines in October 2003. This system, which offers improved fuel economy and cleaner emissions, was made available in a new-model scooter in Japan the following spring.
The PGM-FI system relies on a piezoelectric sensor to measure intake manifold air pressure. It then combines that data with the crankshaft rpm and other information to calculate the air quantity, interpreting the data using performance maps. This results in a more efficient and precise fuel delivery system, improving engine performance and reducing maintenance requirements.
Honda's PGM-FI system is a digital electronic multi-point injection system for internal combustion engines with port injection. It has been available since the early 1980s and implemented in motorcycles, automobiles, and outboard motors. The CX500 Turbo, a 500cc export model, was the first Honda motorcycle to be sold with fuel injection in 1982. Since then, Honda has expanded its fuel injection technology to a wide range of motorcycles, from large-displacement 1800cc bikes to small-displacement 125cc models.
In 2009, Honda introduced electronic fuel injection (EFI) on its dirt bikes, starting with the Honda CRF110F. This was a significant shift in the industry, as it replaced the traditional carburetor system, offering more precise fuel delivery, better throttle response, and increased fuel efficiency. By 2019, Honda had expanded its lineup to include four different fuel-injected models, catering to different riding preferences and terrains.
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Frequently asked questions
Honda started using fuel injectors in the early 1980s. The CX500 Turbo, a 500cc export model, was the first Honda motorcycle to be sold with fuel injection in 1982.
Programmed Fuel Injection, or PGMFI/PGM-FI.
The PGM-FI system monitors throttle position, engine temperature, intake-manifold pressure, atmospheric pressure, exhaust-gas oxygen content, and intake-air temperature. It offers improved fuel economy and cleaner emissions.
Honda introduced electronic fuel injection (EFI) on dirt bikes in 2009 with the Honda CRF110F, making it the first dirt bike with fuel injection.
